The Lieutenant was fiddling with dials and levers in his TARDIS. He materialised his TARDIS. "Acid Rock," said the Lieutenant. "I must find Acid Rock." This was strange behaviour. Why did the Lieutenant want acid and why in rock form?

Erin had been out walking when a box materialized in front of her, and a man crawled out, muttering something about 'acid rock', whatever that was. She, like, most people would be, was confused. "Uh, sir do you need any assistance?"

The Lieutenant didn't notice the girl. "Acid rock, where did they say? At the core?" The Lieutenant stopped and stared at the planet's surface. "How do I get down there then?" he asked. "I hardly plough the TARDIS into the planet's surface? Only the Doctor knows how much damage it would do to the TARDIS and the planet..."

The Lieutenant jumped when she tapped him. "Blimey, don't do that! Acid rock. I must get my hands on some just so I can see how dangerous it is. My friend was going to use it to burn me to cinders and I want to know how much damage it can actually do. Actually, seeing as I need to use the TARDIS and it's only me, yes, you can help!"

"Who said it was going to be safe?" asked the Lieutenant whilst grinning. He walked back to the TARDIS, crouched down and crawled into it. He stood up on the other side and waited for her to follow him.

"Oi! It's not that bad! It's both! Magic is real and science has lost its mind, I probably have too, knowing my age." The Lieutenant pulled the Master Lever and the TARDIS dematerialised. "Have you had any experience of time travel before or of Time Lords before?" he asked her.